When to harvest

Looks like a sativa dominant hybrid to me! How long has it been flowering for? I suppose 3 or 4 weeks? In my opinion the flowering stage is something between 1/3 and 1/2 finished, meaning there are at least 4 or 5 more weeks to go. Harvesting outdoors depends on the weather a lot though, you might have to compromise the last couple of weeks for preventing boytritis/"budrot". Personally i like to push my outdoors as far as i can so in inspect my girls daily and often times harvest when i see the first budrot appear. But i live in a kind of cold and damp climate though, so it depends.